In late July, the first of the Power9 systems, the one code-named “Witherspoon” that was designed explicitly to be installed in the “Summit” and “Sierra” clustered supercomputers installed at Oak Ridge National Laboratories and Lawrence Livermore National Laboratory, respectively, started rolling off the production line at Big Blue and into those HPC centers that are funded by the U.S. Department of Energy. It is the beginning, however quiet, of what we expect will be a rolling thunder rollout of Power9 systems in late 2017 and through early 2018.